Wind inhibition in HMXBs: the effect of clumping and implications for X-ray luminosity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00114099" target="_blank" >RIV/00216224:14310/19:00114099 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1017/S1743921318007573" target="_blank" >https://doi.org/10.1017/S1743921318007573</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921318007573" target="_blank" >10.1017/S1743921318007573</a>

Result language
angličtina
Original language name
Wind inhibition in HMXBs: the effect of clumping and implications for X-ray luminosity
Original language description
Winds of hot stars are driven by the radiative force due to absorption of light in the lines of heavier elements. Consequently, the mass-loss rate and the wind velocity depend on the ionization state of the wind. As a result of this, there is a feedback between the ionizing X-ray source and the stellar wind in HMXBs powered by wind accretion. We study the influence of the small-scale wind structure (clumping) on this feedback using our NLTE hydrodynamical wind models. We find that clumping weakens the effect of X-ray irradiation. Moreover, we show that the observed X-ray luminosities of HMXBs can not be explained by wind accretion scenario without introducing the X-ray feedback. Taking into account the feedback, the observed and estimated X-ray luminosities nicely agree. We identify two cases of X-ray feedback with low and high X-ray luminosities that can explain the dichotomy between SFXTs and sgXBs.
Czech name
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Czech description
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Project
<a href="/en/project/GA18-05665S" target="_blank" >GA18-05665S: Mass-loss in evolved massive stars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Symposium S346 (High-mass X-ray Binaries: Illuminating the Passage from Massive Binaries to Merging Compact Objects)
ISBN
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ISSN
1743-9213
e-ISSN
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Number of pages
6
Pages from-to
28-33
Publisher name
Cambridge University Press
Place of publication
USA
Event location
Vienna, Austria
Event date
Aug 27, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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